Date: Thu, 26 Apr 2012 21:15:53 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-current@freebsd.org Subject: Re: [RFC] Un-staticise the toolchain Message-ID: <4F99ACF9.2050609@infracaninophile.co.uk> In-Reply-To: <CADLo838sdUT2e%2B7j8vCyOmDithLsh3kwDd_z04dWaPoiMphPDQ@mail.gmail.com> References: <20120426093548.GR2358@deviant.kiev.zoral.com.ua> <20120426134140.GF14350@lo0.su> <CADLo838sdUT2e%2B7j8vCyOmDithLsh3kwDd_z04dWaPoiMphPDQ@mail.gmail.com>
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On 26/04/2012 20:01, Chris Rees wrote:
> hydra# cd /usr/ports && time make MAKE=3D~crees/bin/make-static index
>=20
> Generating INDEX-9 - please wait.. Done.
> 729.770u 120.841s 7:45.10 182.8% 920+2676k 5251+116484io 7750pf+=
0w
>=20
> hydra# time make MAKE=3D~crees/bin/make-dynamic index
>=20
> Generating INDEX-9 - please wait.. Done.
> 771.320u 133.540s 8:07.83 185.4% 609+2918k 474+116484io 570pf+0w=
>=20
> We have a 10% slowdown (or 11% speedup, depending on your figures) when=
> using a dynamically loaded make.
I don't think you can validly conclude much from just one sample of each
type. Try repeating those tests enough that you can do some decent
statistics.
Oh, and you should probably either discard the first few results, or
else take pains to flush[*] the buffer cache between each run, so you
end up measuring the same thing repeatably.
Cheers,
Matthew
[*] Unmount and remount /usr/ports should do that I believe.
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
JID: matthew@infracaninophile.co.uk Kent, CT11 9PW
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